UMF RUHLA NVA 1952-M2 Automatic Stainless Steel Men's Watch Instruction Manual

Introduction

This manual provides comprehensive instructions for the UMF RUHLA NVA 1952-M2 automatic stainless steel men's watch. Please read this manual carefully to ensure proper use, maintenance, and longevity of your timepiece. The NVA 1952-M2 is a limited edition combat diver's watch, featuring robust construction and an automatic movement.

Package Contents

Upon opening the special UMF RUHLA watch box, you should find the following items:

• UMF RUHLA NVA 1952-M2 Automatic Watch (on stainless steel bracelet)
• Special UMF RUHLA Watch Box
• Replacement Black Silicone Strap with Pin Buckle
• Strap Changing Tool
• Instruction Manual (this document)

Setup

1. Initial Winding and Time Setting

1. Unscrew the Crown: The crown is located on the right side of the watch case. Rotate it counter-clockwise until it springs free from the case.
2. Manual Winding (Position 1): In this position, rotate the crown clockwise approximately 20-30 times to provide initial power to the automatic movement. This is especially important if the watch has stopped.
3. Setting the Date (Position 2): Gently pull the crown out one click. Rotate the crown to set the date. If the date changes at noon, advance it by 12 hours.
4. Setting the Time (Position 3): Pull the crown out to its furthest position (two clicks). The seconds hand will stop. Rotate the crown to set the hour and minute hands. Push the crown back in when the time is set.
5. Secure the Crown: Push the crown back into the case and screw it clockwise until it is firmly sealed. This ensures water resistance.

2. Bracelet Adjustment

The stainless steel bracelet can be adjusted by removing or adding links. It also includes a diving extension for wear over a wetsuit. The included strap changing tool can be used to adjust the bracelet or swap to the silicone strap.

• Link Removal/Addition: Use the provided tool to push out the pins from the links. Ensure to push in the direction of the arrows usually found on the inside of the links.
• Diving Extension: The deployant clasp features a diving extension. Consult the clasp mechanism for instructions on how to engage and disengage it.
• Silicone Strap Installation: Use the strap changing tool to carefully remove the spring bars holding the stainless steel bracelet. Install the silicone strap using the same spring bars.

Operating the Watch

Automatic Movement (ETA 2826-2)

Your UMF RUHLA NVA 1952-M2 watch is powered by an ETA 2826-2 automatic movement. This movement is self-winding, meaning it gains power from the motion of your wrist. When worn regularly, it will maintain its power reserve. If the watch is not worn for an extended period, it may stop and require manual winding as described in the "Setup" section.

Unidirectional Rotating Bezel

The watch features a black ceramic unidirectional rotating bezel. This bezel is designed for timing events, particularly dive times. To use it:

1. Rotate the bezel counter-clockwise until the triangular marker aligns with the minute hand.
2. The minute hand will then indicate the elapsed time against the bezel's scale.
3. The unidirectional design prevents accidental increases in elapsed time, which is crucial for diver safety.

Water Resistance (1000m / 100 ATM)

The NVA 1952-M2 is rated for 1000 meters (100 ATM) of water resistance and features a helium release valve (often referred to as "helium style" in product descriptions, indicating its design for saturation diving). This makes it suitable for professional diving activities. Always ensure the crown is fully screwed down before exposing the watch to water.

Luminous Display

The watch dial features applied indices and hands with green Luminova for excellent readability in low-light conditions. The seconds hand has an orange fluorescent tip, and the ceramic bezel's luminous point glows light blue in the dark.

Maintenance

• Cleaning: Wipe the watch case and bracelet with a soft, damp cloth. For stainless steel, a mild soap solution can be used, followed by rinsing with fresh water and thorough drying. Ensure the crown is screwed down before cleaning with water.
• Water Resistance: While highly water-resistant, it is recommended to have the watch's water resistance seals checked periodically (e.g., every 2-3 years) by a qualified watchmaker, especially if frequently used for diving.
• Avoid Extreme Temperatures: Do not expose the watch to sudden and extreme temperature changes, as this can affect the movement and seals.
• Magnetic Fields: Keep the watch away from strong magnetic fields (e.g., speakers, refrigerators, certain electronic devices) as magnetism can affect the accuracy of mechanical movements.
• Storage: When not wearing the watch, store it in its original box or a watch winder to maintain its power reserve.

Troubleshooting

• Watch Has Stopped: If the watch has stopped, manually wind it using the crown (Position 1) for 20-30 turns. If it still does not start, ensure it is being worn regularly enough for the automatic movement to function.
• Date Changes at Noon: This indicates the watch's time is set for PM when it should be AM, or vice-versa. Advance the time by 12 hours when setting the date (Position 2) or time (Position 3).
• Inaccurate Timekeeping: Minor variations in timekeeping are normal for mechanical watches. If the inaccuracy is significant, ensure the watch has sufficient power reserve. If the issue persists, it may require servicing by a professional watchmaker.
• Crown Not Screwing Down: Ensure the crown is properly aligned with the threads before attempting to screw it down. Do not force it. If it still won't screw down, do not expose the watch to water and seek professional assistance.

Specifications

Warranty and Support

The UMF RUHLA NVA 1952-M2 watch is a high-quality timepiece "Made in Germany" and is part of a limited edition series. For specific warranty information, please refer to the documentation provided with your purchase or contact UMF RUHLA directly. In case of any issues not covered by the troubleshooting section, it is recommended to seek assistance from an authorized UMF RUHLA service center or a reputable watchmaker.